Hydrocarbon motor



Jufy` 6,1926. 5 1,591,088

VY. H. HOLMES HYDROCARBON MOTOR Filed April 29 1920 ffy-f1- Patented July 6, 1926. y

UNITED STATESV 1,591,088 PATEyr OFFICE.

WILLIAM n. HOLMES, orWALxEnvILLE, oN'rAnIo, CANADA nY'nnocAnnoN Moron,

Application led April 29, 1920. BerialNo. 877,601.

e explosions or reports `are caused byv the contact of the intermittent lstream of. gas with the air. l

Since the reports referred to are thus due to the contact of the intermittent Astream ofgas with the air, it will be evident that if the gases from the exhaust manifold could be made to issue in a continuous stream instead of in an intermittent stream, the source of the reports would be eliminated.

This invent-ion has for its object, there# fore, to eliminate the noise or the report of the exhaust gases of a hydrocarbon motor.

Another object ofthe invention is to separate and reunite the masses of gas in the intermittent stream of exhaust gases in such amanner that the gas will issue in a continuous stream.

Another object of the invention is to provide a mufilerwhich may be manufactured cheaply and that will effectively eliminate the noise from the exhaust of a hydrocarbon motor. -i l j Another object of the invention is to provide a novel method of mufiling the exhaust gases of a hydrocarbon motor.

Further objects will appear from the following description vtaken in connection with the drawings in which .Fig 1 is a view in side elevation of one form of'muffler embodying my invention, a portion of this figure being broken away and shown in section; b

Fig. is a longitudinal, sectional view of the construction shown in Fig. 1 and illustrating the theory of operation of the muliier; i

Fig. 3 is a view illustrating in side elevation, another form of the invention; andi` Fig. 4 is an' elevational view similarwto.

Fig. 1 but illustrating another form of the mufilerv, this form being articularly adapt.- ed for experimental wor The method of muffling vthe exhaust gases in the embodiment of the invention to be described consists briefly of separating and reumt-ing the masses or puffs of gas 1n the intermittent stream of exhaust gases in such a manner that the stream will be changed from an intermittent stream into a const-ant stream, or, stated in other words, the method consists of filling in the spaces between the consecutive puffs or masses of gas in such a manner thata continuous streamy of gas is formed. f

v The structure, by means of which the i'metho'd is carried`out, comprises a plurality lof conduits, preferably two, of different lengths, each conduit receiving a portion of the intermittent stream of. gas from the exhaust manifold, the lengths of the conduits being` so proportioned that the. spaces betweeny consecutive puffs of gas in one conduit will be'lled in by puffs of gas from the other conduit orconduits, thereby changing the stream from an intermittent into a contimious stream of uniform density.

Referring to the drawings, I have shown in Fig. 1, a muflier comprising a conduit 10, which maybe attached in any suitable manner to the exhaust manifold of a hydrocarbon motor, this conduit being divided .into a conduit 11, which may be termed, for convenience, the main conduit, and a conduit 12, which may be termed a branchv conduit. 'It will be seen that the branch conduit 12 is longer than the main conduit and in this instance the two conduits 11 and 12 are substantially equal in cross-section, and this being true, it will be at once evident that the masses or puffs of gas branch conduit 12 wil `travel through a greater distance than those passing 1n a straight line through the conduit 11, before the streams are reunited in the common exit conduit 13. .The lengths of the main and branch conduits are so proportioned that the spaces between `consecutive masses or ,puffs of gas passing through conduit 1l, will, at the junction of the two conduits adjacent the commony exit ofthe gases, be posite the puffs -or masses o gas passing through the branch conduit-12 and in this manner, the spaces, veach of which, as above stated, contains gasof'less density, are elimssing through the positioned opinatedV .by filling in these spaces with gas the friction of the 'delivery conduit.

In order-to lcorrectly apportion lthe gas betweenv the main and branchconduits, a

hinged gate 14 is mounted atthe inlet junction of the conduits 11 and 12 and is adapted to be adjusted by means of a handle 15, se#` cured to the pivot pin15of` thegate. ,It

,should beunderstood that the 'device will `operate successfullyvwithout the'gate, but

that the gate is 'added as avrefin'ementand 'in order to give a more accurate adjustment for the apportionmentfofthe .gases- The gate 14 has also the added function of a cut,y

'outsincewhen positioned tocut off the' `gas from branch conduit 12, all ofthe gas vwill be directed throughthemainconduit 11.`

In Fig. 4 I have illustrated a form ofthe muiiier particularly adapted `for experimental work indetermining the relative lengths of the -main and branch conduits,and in this forml the conduit 10 is providedwith an up# wardly inclined open endedrbranch `conduit,

section 16 at the inletend of the muffler. A main conduit 11 is provided' (as before and at the exit end of the conduit 11 there 1s integrally formed therewith, an oppositely ex- A tending inclined open ended'branch conduit are connected by means of a flexible branchv 17. The conduit `11,-in this instance,y is made `in sections, thek two sections 18 and 19, hav

ing formed thereon, screw threaded portions `2() and 21, these portions bein provided respectively with^"'1ight`` and ley t 'hand screw threads.: A sleeve 22 joins the two-.sections 18 and 19, this sleeve also having at its-oposite ends ri ht and left. hand threads.l

e two branc conduit sections 16 and 17 conduit 23 which may be lformed of any suitable iexible materia The relative lengths of the main and 'branch conduits of this muiiier are changed byv means of the threaded sleeve 22,.since the rotation of this sleeve lengthens o'r `shortens the main conduit 11.

By means of this adjustment, therefore, the lengths of the conduits may be so proportioned as tovdeliver the pus of gas from the branchconduit in a positionto completely fill in the spaces formed between consecutive puits of gas in the main conduit. After these lengths have been so determined for any particularmotor, the muiiier may be made upas shown in Fi 1, with the main conduit and branch lcon uit having a fixedy relation to each other as regards their lengths. It will be understood that aslight overlapping of the puffs, after the streams of Agas are reunited, and due to chan e of speed of the motor or other causes, wil not detract from or be detrimental to the muf-l gas on the walls of the.

v conduits of'muiiier, this form being adapted for use in connection with` motors i in which the single branch conduit maynot properl po-` sition the pui's or 'masses of gas-to lill in the spaces between the consecutive puffs of gas passing through the main conduit and this condition may arise with a multicylinder motor or under certain conditions of speed-.or motor performance. ,This form of theinvention comprises a conduit 24 which is adapted to be secured to the exhaust manifold ofthe motor, this conduit being subdivided into a main conduit 25 and a lurality of branch `conduits 26 and 27. ese branch conduitsare made of ysuch lengths with respectto the `length of the main conduitk that theconduit 26 will deliver a puit of gas in position to partially fill the space between consecutivepu's in the main conduit '25, and they conduit 27 will deliver a vpufoi? gas so positioned as to fill the remaining space between the consecutive puffs in the main conduit.` It will be obvious that -more branch'conduits may be added, if desired, `and also that the sizes and lengths of these conduits may, b experiment, be so de'- termined as to entire y fill iny the spaces between the consecutive puis' of through the main conduit.

Inasmuch as the theory of the operation of the muiiier has lbeen outlined inthe preceding description, a further detailed description of the operation is not deemed necessary. v

From the above specification it Ywill seen that I have vprovided a Vsimple and effective .method of .muilling the exhaust gases of a'hydrocarbon motor by changing the intermittent stream of as into a continuous stream, thereby e iminating the noise of the exhaust. It wilLalsobe clear that the construction by means of which this method vis carried` out, is simple and that this construction -will be effective in operation and moreover may be lcheaply manufactured.

While I have `in the above s ecifcation described \certain specilic embo iments of the invention, it .will be evident' to those skilled inthe art, that further modifications and changes may be made in the method and in the construction and arrangement of the various parts without departlng from the spirit or scope of the invention as expressed inthe following claims.

AHaving'thus described my invention, what I claim and desire to secure by Letters Patent is 1. A muilier for hydrocarbon motors comprising a lplurality of conduits, oneof said aving means for adjustingeit's mg length' and another of said conduitsv flexible. i

2.. A muler for hydrocarbon motors comprising a plurality of conduits, one of said auf gas passingconduits being sectional and havin adjustable coupling means for 'said sectlons and another of said conduits being formed of flexible material.

3. A mutlier for hydrocarbon motors comprising a pair of conduits of different engths, said conduits opening into each other at their ends, one of said conduits being sectional and having adjustable couphng means for said sections, and the other 10 of said conduits being flexible.

4. A mutller comprising a plurality of conduits, one' of said conduits bein rigid and another of said conduits being exible. In testimony whereof I afix my signature.

WILLIAM H. HOLMES. 

